We were looking to purchase an air conditioner for the bedroom, but didn't like the idea of having to modify the exteriour of the house or leaving the windows open for the exhaust produced by the AC unit. Instead, we went to home hardware to purchase a fan and ended up purchasing an "air cooler" instead. How it works is you fill the fan's basin with cool water (you can even use ice cubes!) and when the fan blows, it pushes the air across the cool water so that once the air goes into the room it is nice and cool. It is by no means as cold or as cool as an air conditioner, but it's a great alternative for those that don't want to commit to an airconditioner. We used it throughout the summer at night and it worked perfectly.